Add setKeepAlive as requested in #57

README.md

@@ -91,12 +91,17 @@ bool unsubscribe(const String &topic);
 
 Change the maximum packet size that can be sent over MQTT. The default is 128 bytes.
 ```c++
-bool setMaxPacketSize(const uint16_t size)
+bool setMaxPacketSize(const uint16_t size);
+```
+
+Change the keepalive interval (15 seconds by default)
+```c++
+void setKeepAlive(uint16_t keepAliveSeconds);
 ```
 
 Enable the display of usefull debugging messages that will output to serial.
 ```c++
-void enableDebuggingMessages(const bool enabled = true)
+void enableDebuggingMessages(const bool enabled = true);
 ```
 
 Enable the web updater. This will host a simple form that will allow firmware upgrade (using, e.g., the `.bin` file produced by "Export Compiled Binary" in the Arduino IDE's "Sketch" menu). Must be set before the first loop() call.
@@ -122,6 +127,11 @@ Change the delay between each MQTT reconnection attempt. Default is 15 seconds.
 void setMqttReconnectionAttemptDelay(const unsigned int milliseconds);
 ```
 
+Change the delay between each Wifi reconnection attempt. Default is 60 seconds.
+```c++
+void setWifiReconnectionAttemptDelay(const unsigned int milliseconds);
+```
+
 Connection status
 ```c++
 bool isConnected(); // Return true if everything is connected.

keywords.txt

@@ -25,6 +25,7 @@ publish                 KEYWORD2
 subscribe               KEYWORD2
 subscribe               KEYWORD2
 unsubscribe             KEYWORD2
+setKeepAlive            KEYWORD2
 
 executeDelayed          KEYWORD2
 
@@ -39,4 +40,6 @@ getMqttServerPort       KEYWORD2
 
 setOnConnectionEstablishedCallback  KEYWORD2
 
-setMqttReconnectionAttemptDelay     KEYWORD2
+setMqttReconnectionAttemptDelay     KEYWORD2
+
+setWifiReconnectionAttemptDelay     KEYWORD2

src/EspMQTTClient.cpp

@@ -377,6 +377,11 @@ bool EspMQTTClient::unsubscribe(const String &topic)
   return true;
 }
 
+void EspMQTTClient::setKeepAlive(uint16_t keepAliveSeconds)
+{
+  _mqttClient.setKeepAlive(keepAliveSeconds);
+}
+
 void EspMQTTClient::executeDelayed(const unsigned long delay, DelayedExecutionCallback callback)
 {
   DelayedExecutionRecord delayedExecutionRecord;

src/EspMQTTClient.h

@@ -139,6 +139,7 @@ class EspMQTTClient
   bool subscribe(const String &topic, MessageReceivedCallback messageReceivedCallback);
   bool subscribe(const String &topic, MessageReceivedCallbackWithTopic messageReceivedCallback);
   bool unsubscribe(const String &topic);   //Unsubscribes from the topic, if it exists, and removes it from the CallbackList.
+  void setKeepAlive(uint16_t keepAliveSeconds); // Change the keepalive interval (15 seconds by default)
 
   // Other
   void executeDelayed(const unsigned long delay, DelayedExecutionCallback callback);